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Finding the Fourth Proportional to 455,328.79, 628,354.66 and 251,380.10

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Solution

The fourth proportional to 455,328.79, 628,354.66 and 251,380.10 is: 346,905.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,328.79 : 628,354.66 = 251,380.10 : x
  2. Step 2: Convert to fraction form
    455,328.79/628,354.66 = 251,380.10/x
  3. Step 3: Cross multiply
    455,328.79x = 628,354.66 × 251,380.10
  4. Step 4: Simplify right side
    455,328.79x = 157,955,858,061.49
  5. Step 5: Solve for x
    x = 157,955,858,061.49/455,328.79
  6. Step 6: Final answer
    x = 346,905.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.